Improvement in pumps



J'. BEWSHER..

PUMP.

No.175,01z. Patented March 21,1876.

N. PETERS, PHOTO-LIYHOGRFMER, WASNNGYON. D. C4

UNTTED STATES PATENT EEICEL JAMES BEWSHER, OF KASAS CITY, MISSOURI,ASSIGNOR OF ONE-HALF HIS RIGHT TO JOHN SHAW, OF SAME PLAGE.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 175,012, dated March21,1876; application filed August 7, 1875.

To all whom 'it may concern Be it known that I, JAMES BEWSHEE, of'

Kansas City, Missouri, have invented certain Improvements in Pumps forpumping water mixed with sand or other granular material, of which thefollowing is a specification:

The object of my invention is to construct a simple and effectiveapparatus for pumping water mixed with sander other 'granular sub,

detached views, illustrating diii'erent features. of my invention.

A represents part of the frame-work of the.

` apparatus, and to the upper end of this framework is attached apump-barrel, B, provided with a plunger, D, and communicating with apipe, E, which acts both as a suction and 'discharge pipe, as describedhereafter. The end of the pum p-barrel B is also provided with a chest,a, containing a check-valve, a', and with a cock, b, the construction ofwhich is illustrated more fully in Fig. 3. At one side of thepump-barrel B is arranged a smaller supplementary pump, F, provided witha plunger, which is operated through the medium of an arm, c, attachedto the plunger ofthe main pump. The pump F has an inlet-pipe, d, and anoutlet-pipe, e, the latter forming-acommnnication between said pump Fand the main pump B, and being provided with a checky valve, f, acted onby a spring, for a purpose explained hereafter. The construction of thecheck-valvef is illustrated in Fig. 4. To the base Gr of the apparatusare attached cylindrical casings, inclosing chambers H H', (two in thepresent instance,) the former chamber communicating at the top with thepipe E, and at the bottom with an inlet-pipe, g, through which the sandand water are drawn. This pipe g projects for a considerable distanceabove the bottom of the chamber H, and its upper end is provided with avalve, h, and projects into a tapering receiver, I, which communicatesat its lower end with a passage, i, formed in the base Gr. The oppositeend of this passage communicates with a pipe, g', similar to the pipe g,provided with a valve, It', and extending into a tapering receiver, I',contained in the chamber H', the lower end of this receivercommunicating with a passage, fi', into the outer end of which isscrewed the dischargepipe j. Within the chamber H, immediately below theopening of the pipe E, and between it and the top of the tube g, isarranged a concave-convex screen or shield, fm,` the objectof which willbe rendered apparent hereafter. The lower end of the pipe g is .providedwith an agitator, K, the upper end of which is so secured to said pipethat it can be turned freely thereon by means of its operating-handle n,and its bottom being perforated and provided with a series of curvedvaries, p, so that by .partially rotating -the agitato", the sand willbe stirred up and caused to pass up with the water into the tube g.

The operation of the above-described apparatus is as follows: Thechambers H and HL are arranged either above or below the surface of thewater, the pump B and its connections being always above the surface.When the operation is rst commenced the cock b is opened, the plunger ofthe pump B is then drawn back, and the pump-barrel consequently filledwith air from the pipe E. When the plunger is forced in, this air isexpelled through the check-valve a and cock b,`

and as this operation is repeated a partial vacuum is created in thepipe E and chamber H, which causes a rise of sand and water into and itsdischarge from the tube g. The water fills the chamber H and rises inthe pipe E, and lls the pump-barrel B, the sand, however, striking theguard or shield lm., and passing down through the tapering receiver I.

When the pump-barrel B becomes full of water the cock b is closed, andthe body of water within the barrel is then alternately forced from thepump into the pipe E and drawn back again into the pump, so that a bodyof water free from grit is acted on by the pump, while the sand andwater is drawn through the pipe g and forced out, through the receiverI, into the pas sa,,. fi, and thence through the pipe g', receiver I',and passage i to the ontletpipe j.

The pump F receives a supply of clear water through the pipe d, and,besides aiding in the filling of the barrel of the pump B at the outset,forces a supply of water into the same during its operation, in order toprev-ent any accumulation of air which may enter through thesuction-pipe, or through imperfect joints, and which might interferewith the perfect operation of the apparatus.

The pump B is prevented from drawing water from the pump F during itsbackward stroke, owing to the presence in the connect ing-pipe e of thecheck-valve f, which is acted upon by a spring, with a pressure sufcientto prevent any movement except that caused by the passage of the jet ofwater forced by the pump. F.

It will be observed in Fig. 1 that the inlet tubes g g project for somedistance above the bottoms of the chambers H H', the object of whicharrangement is to prevent the sand from interferin g with the properclosing ofthe valves, which it would do if the valves were arrangeddirectly on the bottoms of the chambers.

In order to, prevent any lodgment of sand whatever in the chambers H H',the tapering receivers I I are employed, these receivers conducting themixture of sand and water directly to the outlets of the chambers.

The agitator K may be operated constantly or at intervals during theoperation of the apparatus, in order to cause a thorough admixt-ure ofsand and water to be pumped up.

By the above-described apparatus I have frequently pumped watercontaining from twenty to fifty per cent. of coarse, heavy sand withoutany interference whatever with the proper operation of the valves, andwithout the access of any sand or grit to the barrel of the pump B. g

If desired, one of the chambers H H may be dispensed with, although Iprefer two, as they canse a more uniform discharge than a singlechamber, and in some cases, instead of `arranging the tapering respirerI Within chamber-,the receiver may he dispensed with, and the casing ofthe chamber itself made funnei-shaped.

I claim as my invention- 1. In a machine for pumping water mixed withsand or other granularma'teriai, the combination of a pis qu or; plungerpump, B, a suction-pipe, E, an one or more chambers H H', communicatingwith the discharge-passage, and provided with an inlet pipe or pipes,projecting above the bottom of the same, the various parts being soarranged and operating in Such a manner that. the mixture Qt' Stud andwater will he received into and discharged from the chambers H H'without passing through the pump, all as set forth.

2. The combination of the elevated vaiveseat of the inlet-pin@ with e.tqndettot. 1, communie-ating with the dismesse-passage, as and for theesmas@ set fet-th- 2. The combinaties ai the iilletfnine y with theagiata;- K. haviug mme@ been provided with iangjes j), as ,set forth,

4- The ccmiiintitien ot the .plunger-mlm B with a supplementarynenni-tt?, connected to .said nnmli B. and Operate. ie unison with theSame. all as and fer! the newest, described- 5 The check-vanaf. arrangedin. the pipe e, between the pump F and the pump B, as and for the-purpQQ destibetf 6. The cnmbiiatien et the. 990k b. and checkvtlve awith the Rump. 'B and pine E liet having a .check-valve. as and fer theparesse set forth.

7. The comhinatiqn of ythe chambers H H', their inlet-pines y a', and tnenne receivers 1 I', with passages i t" forme 'in the base Gr, asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses,

JAMES BFNVSHEl-'t- Witnesses:

WILLIAM M. sima HoMEa REED;

